function newMultiply11() {
	randomnumber1 = getRandomInt(1, 9);
	randomnumber2 = getRandomInt(1, 9);
	right_ans = randomnumber1*randomnumber2;
	if (right_ans > 9) temp_ans_rank = 2;
		else temp_ans_rank = 1;
}

function newDel21() {
	randomnumber2 = getRandomInt(1, 9);
	randomnumber1 = randomnumber2*getRandomInt(10,
		Math.floor(99/randomnumber2));
	right_ans = randomnumber1/randomnumber2;
	temp_ans_rank = define_rank(right_ans);
}

function newMulDel1121() {
	var operation_id = getRandomInt(1, 2);
	switch (operation_id) {
		case 1:
			operation = "Multiply";
			operation_sign = "*";
			left_rank = 1;
			newMultiply11();
			break;
		case 2:
			operation = "Del";
			operation_sign = "/";
			left_rank = 2;
			newDel21();
			break;
	}
}

function Start() {
	operation_sign = "no_operation_sign";
	operation = "no_operation";
	operation_func = newMulDel1121;
	left_rank = -1;
	right_rank = 1;
	ans_rank = -1;
	document.documentElement.addEventListener("keydown", keyHandler, false);
	timer();
	newTask(operation_func);
}

function getScore(right_count, wrong_count) {
	return 10*right_score - 15*wrong_score;
}